Papers, Symposia, Addresses, Reports: Report of Secretary; Report of Treasurer; Report of Committee on Ecological Survey of State; Address of Welcome; Life and Work of John Ulric Nef; Stellar Photometry; The Determination of Stellar Distances;...

Papers, Addresses, Reports: Comparison of Some Amino Acid Mixtures and Proteins for the Diet of Drosophila Melanogaster; Two New Series of Oecetis Occurring in Eastern North America (Trichoptera, Leptoceridae); Origin of Man and Culture; The...

Papers, Addresses, Reports: Patterns of Cell Death in Stalks of Normal and Injured Sorghum; Oxygen Absorption by Coal. Some Observations on Oil Treatment; A Computer Program for Meteorologic Data Reduction; Geographical Approaches to 7th...

Papers, Addresses, Reports: Mahlon Loomis, the Discoverer and Inventor of Radio: A Report by the Chairman of the Radio Discovery Committee of the Illinois State Academy of Science; The Stratigraphy of the Cedar City Formation (Middle Devonian)...

Papers, Addresses, Reports: Treasurer's Report; Resolutions Presented at the Harrisburg Meeting; The Making of Southern Illinois; Does Infant Welfare Work Operate to Preserve the Unfit?; The Origin of Man; Investigations of Agricultural Soils...

Papers, Addresses, Reports: Twenty-five Years of Engineering Geology in Illinois; Science in the High School Curricula; Composition Diagrams for Forests; Diagrams to Show which Species Occur in Particular Plots or Stands; Flora and Ecological...